30 citations · 68 across the 4 of their papers we have counts for
4 papers
Is the present acceleration of the Universe caused by merging with other universes?
Jan Ambjorn, Yoshiyuki Watabiki
We show that by allowing our Universe to merge with other universes one is lead to modified Friedmann equations that explain the present accelerated expansion of our Universe witho…
Quantum Geometry and Diffusion
J. Ambjorn, K. N. Anagnostopoulos, T. Ichihara +2
We study the diffusion equation in two-dimensional quantum gravity, and show that the spectral dimension is two despite the fact that the intrinsic Hausdorff dimension of the ensem…
The Two-point Function of c=-2 Matter Coupled to 2D Quantum Gravity
J. Ambjorn, C. Kristjansen, Y. Watabiki
We construct a reparametrization invariant two-point function for c=-2 conformal matter coupled to two-dimensional quantum gravity. From the two-point function we extract the criti…
Non-critical string field theory for 2d quantum gravity coupled to (p,q)--conformal fields
J. Ambjorn, Y. Watabiki
We propose a non-critical string field theory for quantum gravity coupled to (,) conformal fields. The Hamiltonian is described by the generators of the algebra, a…